Carbon-feeding mechanism



Sept. l, 1925.

. 1,552,060 A. A. KRAMER ET AL CARBON FEEDING MECHANI SM Filedy Oct. 27. 1923 IN Vli/VTOR nd/@#14, ffm/ller:

Patented Sept.,1,-1,925.

I y .1,5szo6o PATENT oFFicE.

4ANDREW A. KRAMER AND ALVAII M. GRIFFIN, or KANSAS cI'rY, MISSOURI.

CARBON-FEEDING MEGHANISM.

Application led October 27, 1923. Serial No. 671,191.

To all 1li/ 10m t may concern: Y

Be it known that we, ANDREW A. KRAMER and Ara/'AH i M. GRIFFIN, citizens of the United States, residing at 'Kansas City, in the county of Jackson-and State of Missouri, have invented certain new and useful Improvements in Carbon-Feeding Mechanism: and We do declare the following to be a full, clear,l and exact description of the invention, such as will enable others .skilled in the art to which it appertains to make and use the same,` reference being had to the acvcompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention relates to carbon electrode feeds and particularly to a mechanism for feeding carbon electrodes for welding machines, the purpose of the invention being to feed the carbon progressively a-s'the carbon carriage moves across the work.

The novelty of the invention will be understood by reference to the following description in connection with the accompanyl ing drawings, in which:

Fig. 1 is alperspective view of yan electrode carriage showing the holder, the electrode in operative position with the feed bar partly in section and partly perspective.

Fig. 2 is a perspective vlew of the holder and the head for receiving it, and

Fig. 3 is a perspective view of the holder rotating pinion.

The carriage for traversing the electrode across the work is shown as comprisin a plate 1, having a right angularly projectingj portion or angle 2 at its upper edge with an off set channel Son which are mounted roll-L ers 4, therollers being adapted to ride over a, rail. The late is adapted to be moved back and fort by a suitable means, forexample, a chain and drive mechanism. The plate 1 carries a guide 5 with a dove tailed groove 6 to receive the dovetail 7 of the head or block 8 from which depends a bracket 9.` yThe head or block 8 is bifurcated by a slot 10 in which is located a pinion 11, the pinion has an inwardly projecting tooth 12 which engages an elongated groove 13 in the carbon holder 14C. The carbon holder is cylindrical and it is provided with a plurality of annular grooves 15 adapted to be engaged by an arcuate latch lor dog 16 pivoted to the head cat 17 "i and having a handle or linger 18, by means of which it can be drawn back by action of the leafspring 19 also carried by the block. The arcuate edge of the dog is provided with a curved rib 20 to engage any of the grooves. 15 of the holder which projects through the Vertical opening 21 in the head 8. The rib 20 willpermit the holder to rotate but will prevent it fromihaving longitudinaLmovement with respect to the head or block when one of the grooves'l is engaged bythe rib 20. The vertical movement of the electrode 22 in socket 2,3 of the holder being effected by an inclined feed bar 24 straddled b the outstanding fingers 25 and 26 carrie by the head and the rotatable movement of the holderv will be effected by the rack or teeth 27 which en- Y gages the teeth of the pinion 11.

When the parts are assembled and appropriate means is provided for moving the carriage consisting of the plate 1 and its appurtenances in one direction the fingers 25 and 26 preferably provided with sleeves will ride down the incline bar 24 so that the slide consisting of the head 8 and bracket will be moved vertically in the guide 6 and if the bar is at the proper angle of inclination the point 28 of the electrode 22 will be maintained a uniform Adistance from the work 29. The bar can be set at various angles depending upon the amount of current to be passed to theelectrode, this being important and it will be necessary to feed the 'electrode faster when heavy current is going through, than when lighter current is passing. When the carriage has reached the limit of its traversing movement the f electrode will be set down as far as it can set, then the carriage can be returned to its original position and a new electrode' 1. In a device of the class described, a

carriage having a vertical guide, a vertically dinal movement with respect to the slide,.

said detent bei-ng releasable topermit free vertical adjustment of the carbon holder.

2. In adevicey of the class described, a

horizontal movable carriage, a vertical guide on the carriage, a vertical slide 'in the guide, an inclined `oar operatively connected to the slide to move it vertically as the carriage moves in one direction, a carbon holder projecting through the slide provided with parallel circumferential grooves, a pivoted detent on the slide engaging one of the grooves to permit the holder to rotate but yholding' it against longitudinal movement and means for rotating the carbon liolder.

In testimonyT whereof We alix our signatures. ANDREW A. KRAMER. yALVAII M. GRIFFIN. 

